- Add StabilityResult struct to capture per-body results
- Add print_summary() function that displays formatted test results
- Summary includes:
- Stability criteria explanation
- Per-body results table with stability status
- Overall analysis with recommendations
- Current time step assessment
- Status shows current dt=60s is very stable with good margin
- Can be increased significantly if needed for faster simulation
- Create tests/informational/ for diagnostic/informational tests not in main suite
- Move test_time_step_stability.{cpp,toml} from tests/ to informational/
- Add README.md documenting informational tests purpose and usage
- Add dedicated Makefile for building informational tests separately
- Tests find maximum stable time step for RK4 integration across different orbital regimes
- Limiting factor is Mercury orbiter (12h period): max stable dt = 270s
- Current default 60s is very stable with good margin